Re: 1/10 twist .308 to 1000yrds
240 smk G7 .332, 300 yards, 10mph cross wind
2700 fps: tof .3612, lag time .0279, drift 4.92"
1050 fps: tof .8976, lag time .0404, drift 7.17"
Ratios: tof .4024,lag time .6906, drift .6862
as you can see, drift is proportional to lag time, and not time...